Description

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to properly validate team membership permissions in the Add Channel Member API which allows users from one team to access user metadata and channel membership information from other teams via the API endpoint

INFO

Published Date :

2025-11-13T17:32:03.975Z

Last Modified :

2025-11-13T18:01:46.459Z

Source :

Mattermost
AFFECTED PRODUCTS

The following products are affected by CVE-2025-11777 vulnerability.

Vendors Products
Mattermost
  • Mattermost
  • Mattermost Server
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-11777.

URL Resource
https://mattermost.com/security-updates cve-icon cve-icon
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CVSS Vulnerability Scoring System

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